When an environment is hypotonic, the cell has more solute so solvent move from outside the cell to inside causing the cell to swell.
WHAT IS TONICITY?
- Tonicity is the ability of a solution to induce water loss or water gain in a cell. A solution can either be; hypertonic, hypotonic or isotonic
- A hypertonic solution has more concentration of solute than its surroundings while a hypotonic solution has less concentration of solute compared to it's surroundings. 
- If a hypotonic solution has less solute, this means that it will have more solvent (water). Based on the principle of osmosis, water moves from a region of high concentration to region of low concentration. 
Hence, water will move into a cell that is located in a hypotonic environment, causing it to swell. 
Learn more: brainly.com/question/13802181?referrer=searchResults
 
        
             
        
        
        
"Mechanical Energy is the energy of motion of an object"
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Helium is inert and odorless colorless